12259587698 has 18 divisors (see below), whose sum is σ = 18720456111. Its totient is φ = 6021358044.

The previous prime is 12259587647. The next prime is 12259587731. The reversal of 12259587698 is 89678595221.

It can be written as a sum of positive squares in only one way, i.e., 6129793849 + 6129793849 = 78293^2 + 78293^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=78293.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12259587698.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 9237911 + ... + 9239237.

Almost surely, 2^12259587698 is an apocalyptic number.

12259587698 is a deficient number, since it is larger than the sum of its proper divisors (6460868413).

12259587698 is an frugal number, since it uses more digits than its factorization.

12259587698 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2774 (or 1388 counting only the distinct ones).

The product of its digits is 21772800, while the sum is 62.

The spelling of 12259587698 in words is "twelve billion, two hundred fifty-nine million, five hundred eighty-seven thousand, six hundred ninety-eight".